I friended the guy who was wanting to downgrade, The source unpack is now on the down low due to copyright reasons but I do have a link. havnt checked any of the links above me but they may be there. Just message me for the link! :D Also once you do have the source unpack installed one of my friends BLIZIK has a great tutorial for the new strats for portal (Azorae's tutorial is great on learning the basics but is now obsolete)

Thanks guys, will be pming for the links ;). My solution was to find a physical copy of portal. I've been using Azorae's, Zimbaway and other Source speedrunners, but I want to switch from Inbounds to Oob. I love Portal franchise :D